grafbase
★ 1.2k
vs
open-connector
★ 6.1k
grafbase vs open-connector
grafbase: Grafbase is a self-hosted, Rust-powered GraphQL Federation Gateway for high-scale, mission-critical applications. It unifies diverse data sources and microservices into a single, performant GraphQL API, offering enterprise-grade security and flexible deployment options.; open-connector: OpenConnector is an open-source connector gateway that allows AI agents and applications to connect to over 1,000 providers and utilize 10,000+ prebuilt actions. It centralizes credential management and exposes a unified catalog, enabling robust and inspectable access to various user application accounts without exposing sensitive data to agent processes.
01
TL;DR
grafbaseAPI Integration · ★ 1.2k
When to choose:
- You want a high-performance Rust Apollo Federation v2 GraphQL gateway that can expose your federated graph directly as an MCP server.
- You want to unify GraphQL subgraphs, REST, gRPC, Postgres, and Kafka using WebAssembly extensions in a self-hosted gateway.
When to skip:
- You do not use GraphQL and just want a proxy/gateway in front of existing MCP servers; use MCP Gateways like AgentGateway or MetaMCP.
- You want to write custom MCP tools in Python; use FastMCP or the MCP Python SDK.
open-connectorAPI Integration · ★ 6.1k
When to choose:
- You want your agents to use 1,000+ app integrations without handing provider credentials to the agent process.
- You want a self-hostable alternative to Composio, runnable with Docker, on Fly.io or on Cloudflare Workers.
- You want inspectable Action contracts (schemas, required scopes, executor source) with scopes, runtime tokens and allow and block policies.
When to skip:
- You need deep coverage of one service: integration depth varies across 1,000+ providers.
- You want no vendor path at all: hosted authentication and the commercial runtime come from OOMOL, and self-hosting means you run the runtime yourself.
- You do not want to connect and manage each provider's account, credentials and scopes.
02
Side-by-Side Comparison
Field
grafbaseopen-connectorCategory
API Integration
API Integration
Stars
★ 1.2k
★ 6.1k
License
MPL-2.0
Apache-2.0
Install Command
curl -fsSL https://grafbase.com/downloads/gateway | bash
docker compose up
Updated
3mo ago
1d ago
Open Source
Yes
Yes
Tags
GraphQL Federation, API Gateway, Rust
API Gateway, AI Agents, Connectors
03
Features
grafbase01Native support for Apollo Federation v2 specification.
02Rust-powered gateway delivering ultra-low latency and memory efficiency.
03Extensible via WebAssembly for custom authentication, authorization, and data sources.
04Enterprise-grade security with advanced schema governance and fine-grained authorization.
05Universal data integration supporting GraphQL subgraphs, REST APIs, gRPC, and databases.
open-connector01Shared catalog of 1,000+ providers and 10,000+ prebuilt Actions.
02Centralized credential handling for API keys, OAuth2, and custom credentials.
03Inspectable Action contracts including request/response schemas and required scopes.
04Flexible deployment options: local, Fly.io, Cloudflare Workers, or hosted runtime.
05Web Console for browsing connectors, configuring credentials, and monitoring usage.
04
Use Cases
grafbase↳Unifying disparate microservices, legacy systems, and third-party APIs into a single federated GraphQL API.
↳Building high-performance, mission-critical APIs requiring enterprise-grade security and advanced schema governance.
↳Extending GraphQL capabilities with custom authentication, authorization, and arbitrary data source resolvers via WebAssembly.
open-connector↳Agent products requiring durable and reusable access across various work apps, developer tools, and data systems.
↳Products adding agent workflows that need stable, inspectable Action contracts for user app access.
↳Teams seeking hosted authentication for speed while maintaining a path to private or self-hosted runtime control.
↳Developers and teams who want full control over their connector runtime and data.
05
Best For
grafbaseEssential
open-connectorEssentialTrending
FAQ
FAQ
What is the difference between grafbase and open-connector?
Both grafbase and open-connector are in the API Integration category. grafbase has 1.2k stars, while open-connector has 6.1k stars.
Which is better, grafbase or open-connector?
The best choice depends on your use case. Choose grafbase if Unifying disparate microservices, legacy systems, and third-party APIs into a single federated GraphQL API., and open-connector if Agent products requiring durable and reusable access across various work apps, developer tools, and data systems..
Is grafbase free or open source?
Yes, grafbase is open source on GitHub (MPL-2.0).
Is open-connector free or open source?
Yes, open-connector is open source on GitHub (Apache-2.0).
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